This is NOT contemporary art but the shift bosses’ change room (Steigerkaue) in the world heritage site of Rammelsberg mine. Instead of lockers the shift bosses used these baskets for storing their clothes and put them high up in the hall. A similar change room (Kaue) for miners I saw at the cocking plant Hansa in Dortmund.
Walking through the museums of the visitor mine and world heritage site Rammelsberg near Goslar gives an interesting insight in the miners’ life. For example you can see this first aid room equipped with materials from the 1980s.
There are several underground tours exploring the Rammelsberg Mine. I took the shortest one which goes through the Roeder Gallery. On this tour you follow the route of the water, channelled into the mine to set big water wheels in motion.